Bearing shell, bearing, piston engine and use of a bearing shell

EP4544198C0Active Publication Date: 2026-05-06WARTSILA FINLAND OY
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
WARTSILA FINLAND OY
Filing Date
2022-06-22
Publication Date
2026-05-06

AI Technical Summary

Technical Problem

Existing big end bearings in piston engines experience uneven wear of the crankpin, leading to the formation of ridges that cause overloading and local wear of the bearing, particularly at top dead center, which can persist even after bearing replacement.

Method used

The bearing shell features an oil groove with a first and second straight portion running in the circumferential direction and a third portion that deviates axially, ensuring uniform crankpin wear by minimizing non-contact areas and reducing ridge formation.

Benefits of technology

The solution promotes uniform crankpin wear, reducing overloading and local wear of the bearing, thereby enhancing the durability and performance of the piston engine.

✦ Generated by Eureka AI based on patent content.

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